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[PATCH v47 2/9] give options bitmask to table_delete/table_update 959+ messages / 1 participants [nested] [flat]
* [PATCH v47 2/9] give options bitmask to table_delete/table_update @ 2026-03-30 11:27 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-03-30 11:27 UTC (permalink / raw) --- src/backend/access/heap/heapam.c | 16 ++++++++++------ src/backend/access/heap/heapam_handler.c | 13 ++++++++----- src/backend/access/table/tableam.c | 6 +++--- src/backend/executor/nodeModifyTable.c | 9 +++++++-- src/include/access/heapam.h | 7 ++++--- src/include/access/tableam.h | 23 +++++++++++++++-------- 6 files changed, 47 insertions(+), 27 deletions(-) diff --git a/src/backend/access/heap/heapam.c b/src/backend/access/heap/heapam.c index d34136d2e94..0645b2d5f58 100644 --- a/src/backend/access/heap/heapam.c +++ b/src/backend/access/heap/heapam.c @@ -2862,8 +2862,8 @@ xmax_infomask_changed(uint16 new_infomask, uint16 old_infomask) */ TM_Result heap_delete(Relation relation, const ItemPointerData *tid, - CommandId cid, Snapshot crosscheck, bool wait, - TM_FailureData *tmfd, bool changingPart) + CommandId cid, uint32 options, Snapshot crosscheck, + bool wait, TM_FailureData *tmfd) { TM_Result result; TransactionId xid = GetCurrentTransactionId(); @@ -2876,6 +2876,7 @@ heap_delete(Relation relation, const ItemPointerData *tid, TransactionId new_xmax; uint16 new_infomask, new_infomask2; + bool changingPart = (options & TABLE_DELETE_CHANGING_PARTITION) != 0; bool have_tuple_lock = false; bool iscombo; bool all_visible_cleared = false; @@ -3290,9 +3291,11 @@ simple_heap_delete(Relation relation, const ItemPointerData *tid) TM_FailureData tmfd; result = heap_delete(relation, tid, - GetCurrentCommandId(true), InvalidSnapshot, + GetCurrentCommandId(true), + 0, + InvalidSnapshot, true /* wait for commit */ , - &tmfd, false /* changingPart */ ); + &tmfd); switch (result) { case TM_SelfModified: @@ -3331,7 +3334,7 @@ simple_heap_delete(Relation relation, const ItemPointerData *tid) */ TM_Result heap_update(Relation relation, const ItemPointerData *otid, HeapTuple newtup, - CommandId cid, Snapshot crosscheck, bool wait, + CommandId cid, uint32 options, Snapshot crosscheck, bool wait, TM_FailureData *tmfd, LockTupleMode *lockmode, TU_UpdateIndexes *update_indexes) { @@ -4585,7 +4588,8 @@ simple_heap_update(Relation relation, const ItemPointerData *otid, HeapTuple tup LockTupleMode lockmode; result = heap_update(relation, otid, tup, - GetCurrentCommandId(true), InvalidSnapshot, + GetCurrentCommandId(true), 0, + InvalidSnapshot, true /* wait for commit */ , &tmfd, &lockmode, update_indexes); switch (result) diff --git a/src/backend/access/heap/heapam_handler.c b/src/backend/access/heap/heapam_handler.c index cdd153c6b6d..69debeff516 100644 --- a/src/backend/access/heap/heapam_handler.c +++ b/src/backend/access/heap/heapam_handler.c @@ -313,21 +313,23 @@ heapam_tuple_complete_speculative(Relation relation, TupleTableSlot *slot, static TM_Result heapam_tuple_delete(Relation relation, ItemPointer tid, CommandId cid, - Snapshot snapshot, Snapshot crosscheck, bool wait, - TM_FailureData *tmfd, bool changingPart) + uint32 options, Snapshot snapshot, Snapshot crosscheck, + bool wait, TM_FailureData *tmfd) { /* * Currently Deleting of index tuples are handled at vacuum, in case if * the storage itself is cleaning the dead tuples by itself, it is the * time to call the index tuple deletion also. */ - return heap_delete(relation, tid, cid, crosscheck, wait, tmfd, changingPart); + return heap_delete(relation, tid, cid, options, crosscheck, wait, + tmfd); } static TM_Result heapam_tuple_update(Relation relation, ItemPointer otid, TupleTableSlot *slot, - CommandId cid, Snapshot snapshot, Snapshot crosscheck, + CommandId cid, uint32 options pg_attribute_unused(), + Snapshot snapshot, Snapshot crosscheck, bool wait, TM_FailureData *tmfd, LockTupleMode *lockmode, TU_UpdateIndexes *update_indexes) { @@ -339,7 +341,8 @@ heapam_tuple_update(Relation relation, ItemPointer otid, TupleTableSlot *slot, slot->tts_tableOid = RelationGetRelid(relation); tuple->t_tableOid = slot->tts_tableOid; - result = heap_update(relation, otid, tuple, cid, crosscheck, wait, + result = heap_update(relation, otid, tuple, cid, options, + crosscheck, wait, tmfd, lockmode, update_indexes); ItemPointerCopy(&tuple->t_self, &slot->tts_tid); diff --git a/src/backend/access/table/tableam.c b/src/backend/access/table/tableam.c index 86481d7c029..68ff0966f1c 100644 --- a/src/backend/access/table/tableam.c +++ b/src/backend/access/table/tableam.c @@ -320,9 +320,9 @@ simple_table_tuple_delete(Relation rel, ItemPointer tid, Snapshot snapshot) result = table_tuple_delete(rel, tid, GetCurrentCommandId(true), - snapshot, InvalidSnapshot, + 0, snapshot, InvalidSnapshot, true /* wait for commit */ , - &tmfd, false /* changingPart */ ); + &tmfd); switch (result) { @@ -369,7 +369,7 @@ simple_table_tuple_update(Relation rel, ItemPointer otid, result = table_tuple_update(rel, otid, slot, GetCurrentCommandId(true), - snapshot, InvalidSnapshot, + 0, snapshot, InvalidSnapshot, true /* wait for commit */ , &tmfd, &lockmode, update_indexes); diff --git a/src/backend/executor/nodeModifyTable.c b/src/backend/executor/nodeModifyTable.c index 582bcc367c0..76728f08734 100644 --- a/src/backend/executor/nodeModifyTable.c +++ b/src/backend/executor/nodeModifyTable.c @@ -1522,14 +1522,18 @@ ExecDeleteAct(ModifyTableContext *context, ResultRelInfo *resultRelInfo, ItemPointer tupleid, bool changingPart) { EState *estate = context->estate; + uint32 options = 0; + + if (changingPart) + options |= TABLE_DELETE_CHANGING_PARTITION; return table_tuple_delete(resultRelInfo->ri_RelationDesc, tupleid, estate->es_output_cid, + options, estate->es_snapshot, estate->es_crosscheck_snapshot, true /* wait for commit */ , - &context->tmfd, - changingPart); + &context->tmfd); } /* @@ -2331,6 +2335,7 @@ lreplace: */ result = table_tuple_update(resultRelationDesc, tupleid, slot, estate->es_output_cid, + 0, estate->es_snapshot, estate->es_crosscheck_snapshot, true /* wait for commit */ , diff --git a/src/include/access/heapam.h b/src/include/access/heapam.h index 6018dacf0f7..77560b22877 100644 --- a/src/include/access/heapam.h +++ b/src/include/access/heapam.h @@ -382,13 +382,14 @@ extern void heap_multi_insert(Relation relation, TupleTableSlot **slots, int ntuples, CommandId cid, uint32 options, BulkInsertState bistate); extern TM_Result heap_delete(Relation relation, const ItemPointerData *tid, - CommandId cid, Snapshot crosscheck, bool wait, - TM_FailureData *tmfd, bool changingPart); + CommandId cid, uint32 options, Snapshot crosscheck, + bool wait, TM_FailureData *tmfd); extern void heap_finish_speculative(Relation relation, const ItemPointerData *tid); extern void heap_abort_speculative(Relation relation, const ItemPointerData *tid); extern TM_Result heap_update(Relation relation, const ItemPointerData *otid, HeapTuple newtup, - CommandId cid, Snapshot crosscheck, bool wait, + CommandId cid, uint32 options, + Snapshot crosscheck, bool wait, TM_FailureData *tmfd, LockTupleMode *lockmode, TU_UpdateIndexes *update_indexes); extern TM_Result heap_lock_tuple(Relation relation, HeapTuple tuple, diff --git a/src/include/access/tableam.h b/src/include/access/tableam.h index ab2e7fc1dfe..6cdd949f58d 100644 --- a/src/include/access/tableam.h +++ b/src/include/access/tableam.h @@ -287,6 +287,11 @@ typedef struct TM_IndexDeleteOp /* Follow update chain and lock latest version of tuple */ #define TUPLE_LOCK_FLAG_FIND_LAST_VERSION (1 << 1) +/* "options" flag bits for table_tuple_delete */ +#define TABLE_DELETE_CHANGING_PARTITION (1 << 0) + +/* "options" flag bits for table_tuple_update */ +/* XXX none at present */ /* Typedef for callback function for table_index_build_scan */ typedef void (*IndexBuildCallback) (Relation index, @@ -558,17 +563,18 @@ typedef struct TableAmRoutine TM_Result (*tuple_delete) (Relation rel, ItemPointer tid, CommandId cid, + uint32 options, Snapshot snapshot, Snapshot crosscheck, bool wait, - TM_FailureData *tmfd, - bool changingPart); + TM_FailureData *tmfd); /* see table_tuple_update() for reference about parameters */ TM_Result (*tuple_update) (Relation rel, ItemPointer otid, TupleTableSlot *slot, CommandId cid, + uint32 options, Snapshot snapshot, Snapshot crosscheck, bool wait, @@ -1533,12 +1539,12 @@ table_multi_insert(Relation rel, TupleTableSlot **slots, int nslots, */ static inline TM_Result table_tuple_delete(Relation rel, ItemPointer tid, CommandId cid, - Snapshot snapshot, Snapshot crosscheck, bool wait, - TM_FailureData *tmfd, bool changingPart) + uint32 options, Snapshot snapshot, Snapshot crosscheck, + bool wait, TM_FailureData *tmfd) { - return rel->rd_tableam->tuple_delete(rel, tid, cid, + return rel->rd_tableam->tuple_delete(rel, tid, cid, options, snapshot, crosscheck, - wait, tmfd, changingPart); + wait, tmfd); } /* @@ -1578,12 +1584,13 @@ table_tuple_delete(Relation rel, ItemPointer tid, CommandId cid, */ static inline TM_Result table_tuple_update(Relation rel, ItemPointer otid, TupleTableSlot *slot, - CommandId cid, Snapshot snapshot, Snapshot crosscheck, + CommandId cid, uint32 options, + Snapshot snapshot, Snapshot crosscheck, bool wait, TM_FailureData *tmfd, LockTupleMode *lockmode, TU_UpdateIndexes *update_indexes) { return rel->rd_tableam->tuple_update(rel, otid, slot, - cid, snapshot, crosscheck, + cid, options, snapshot, crosscheck, wait, tmfd, lockmode, update_indexes); } -- 2.47.3 --2fxmamo6mu2qbxgv Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v47-0003-Add-CONCURRENTLY-option-to-REPACK-command.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
* [PATCH v50 5/8] support repacking tables with exclusion constraints @ 2026-04-02 18:59 Álvaro Herrera <[email protected]> 0 siblings, 0 replies; 959+ messages in thread From: Álvaro Herrera @ 2026-04-02 18:59 UTC (permalink / raw) --- src/backend/commands/repack.c | 78 +++++++++++++++++++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/src/backend/commands/repack.c b/src/backend/commands/repack.c index 73eadd1ff4a..03829892d57 100644 --- a/src/backend/commands/repack.c +++ b/src/backend/commands/repack.c @@ -49,6 +49,7 @@ #include "catalog/namespace.h" #include "catalog/objectaccess.h" #include "catalog/pg_am.h" +#include "catalog/pg_constraint.h" #include "catalog/pg_control.h" #include "catalog/pg_inherits.h" #include "catalog/toasting.h" @@ -199,6 +200,8 @@ static void rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHea TransactionId frozenXid, MultiXactId cutoffMulti); static List *build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes); +static void copy_index_constraints(Relation old_index, Oid new_index_id, + Oid new_heap_id); static Relation process_single_relation(RepackStmt *stmt, LOCKMODE lockmode, bool isTopLevel, @@ -3211,6 +3214,7 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) false); newindex = index_create_copy(NewHeap, false, oldindex, ind->rd_rel->reltablespace, newName); + copy_index_constraints(ind, newindex, RelationGetRelid(NewHeap)); result = lappend_oid(result, newindex); index_close(ind, NoLock); @@ -3219,6 +3223,80 @@ build_new_indexes(Relation NewHeap, Relation OldHeap, List *OldIndexes) return result; } +/* + * Create a transient copy of a constraint -- supported by a transient + * copy of the index that supports the original constraint. + * + * When repacking a table that contains exclusion constraints, the executor + * relies on these constraints being properly catalogued. These copies are + * to support that. + * + * We don't need the constraints for anything else (the original constraints + * will be there once repack completes), so we add pg_depend entries so that + * the are dropped when the transient table is dropped. + */ +static void +copy_index_constraints(Relation old_index, Oid new_index_id, Oid new_heap_id) +{ + ScanKeyData skey; + Relation rel; + TupleDesc desc; + SysScanDesc scan; + HeapTuple tup; + ObjectAddress objrel; + + rel = table_open(ConstraintRelationId, RowExclusiveLock); + ObjectAddressSet(objrel, RelationRelationId, new_heap_id); + + /* + * Retrieve the constraints supported by the old index and create an + * identical one that points to the new index. + */ + ScanKeyInit(&skey, + Anum_pg_constraint_conrelid, + BTEqualStrategyNumber, F_OIDEQ, + ObjectIdGetDatum(old_index->rd_index->indrelid)); + scan = systable_beginscan(rel, ConstraintRelidTypidNameIndexId, true, + NULL, 1, &skey); + desc = RelationGetDescr(rel); + while (HeapTupleIsValid(tup = systable_getnext(scan))) + { + Form_pg_constraint conform = (Form_pg_constraint) GETSTRUCT(tup); + Oid oid; + Datum values[Natts_pg_constraint] = {0}; + bool nulls[Natts_pg_constraint] = {0}; + bool replaces[Natts_pg_constraint] = {0}; + HeapTuple new_tup; + ObjectAddress objcon; + + if (conform->conindid != RelationGetRelid(old_index)) + continue; + + oid = GetNewOidWithIndex(rel, ConstraintOidIndexId, + Anum_pg_constraint_oid); + values[Anum_pg_constraint_oid - 1] = ObjectIdGetDatum(oid); + replaces[Anum_pg_constraint_oid - 1] = true; + values[Anum_pg_constraint_conrelid - 1] = ObjectIdGetDatum(new_heap_id); + replaces[Anum_pg_constraint_conrelid - 1] = true; + values[Anum_pg_constraint_conindid - 1] = ObjectIdGetDatum(new_index_id); + replaces[Anum_pg_constraint_conindid - 1] = true; + + new_tup = heap_modify_tuple(tup, desc, values, nulls, replaces); + + /* Insert it into the catalog. */ + CatalogTupleInsert(rel, new_tup); + + /* Create a dependency so it's removed when we drop the new heap. */ + ObjectAddressSet(objcon, ConstraintRelationId, oid); + recordDependencyOn(&objcon, &objrel, DEPENDENCY_AUTO); + } + systable_endscan(scan); + + table_close(rel, RowExclusiveLock); + + CommandCounterIncrement(); +} + /* * Try to start a background worker to perform logical decoding of data * changes applied to relation while REPACK CONCURRENTLY is copying its -- 2.47.3 --brnevsqjnuzpyok4 Content-Type: text/x-diff; charset=utf-8 Content-Disposition: attachment; filename="v50-0006-Error-out-any-process-that-would-block-at-REPACK.patch" ^ permalink raw reply [nested|flat] 959+ messages in thread
end of thread, other threads:[~2026-04-02 18:59 UTC | newest] Thread overview: 959+ messages (download: mbox mbox.gz follow: Atom feed) -- links below jump to the message on this page -- 2026-03-30 11:27 [PATCH v47 2/9] give options bitmask to table_delete/table_update Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]> 2026-04-02 18:59 [PATCH v50 5/8] support repacking tables with exclusion constraints Álvaro Herrera <[email protected]>
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