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Update Open Items list
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* Update Open Items list
@ 1999-05-12 12:55  Bruce Momjian <[email protected]>
  0 siblings, 2 replies; 12548+ messages in thread

From: Bruce Momjian @ 1999-05-12 12:55 UTC (permalink / raw)
  To: pgsql-hackers


Some items completed and removed.

---------------------------------------------------------------------------


Default of '' causes crash in some cases
shift/reduce conflict in grammar, SELECT ... FOR [UPDATE|CURSOR]
create table "AA" ( x int4 , y serial ); insert into "AA" (x) values (1); fails
SELECT 1; SELECT 2 fails when sent not via psql, semicolon problem
SELECT * FROM test WHERE test IN (SELECT * FROM test) fails with strange error
CREATE OPERATOR *= (leftarg=_varchar, rightarg=varchar, 
	procedure=array_varchareq); fails, varchar is reserved word, quotes work
CLUSTER failure if vacuum has not been performed in a while
Improve Subplan list handling
Allow Subplans to use efficient joins(hash, merge) with upper variable
Improve NULL parameter passing into functions
Table with an element of type inet, will show "0.0.0.0/0" as "00/0"
When creating a table with either type inet or type cidr as a primary,unique
   key, the "198.68.123.0/24" and "198.68.123.0/27" are considered equal
Allow ESCAPE '\' at the end of LIKE for ANSI compliance, or rewrite the
	LIKE handling by rewriting the user string with the supplied ESCAPE
Fix leak for expressions?, aggregates?
Improve LIMIT processing by using index to limit rows processed
Allow "col AS name" to use name in WHERE clause?  Is this ANSI? 
	Works in GROUP BY
Update reltuples from COPY command
nodeResults.c and parse_clause.c give compiler warnings
Move LIKE index optimization handling to the optimizer?
MVCC locking, deadlock, priorities?
Make sure pg_internal.init generation can't cause unreliability
SELECT ... WHERE col ~ '(foo|bar)' works, but CHECK on table always fails
CREATE INDEX zman_index ON test (date_trunc( 'day', zman ) datetime_ops) fails
	index can't store constant parameters, allow SQL function indexes?
Have hashjoins use portals, not fixed-size memory
DROP TABLE leaves INDEX file descriptor open
ALTER TABLE ADD COLUMN to inherited table put column in wrong place
resno's, sublevelsup corrupt when reaching rewrite system
crypt_loadpwdfile() is mixing and (mis)matching memory allocation
  protocols, trying to use pfree() to release pwd_cache vector from realloc()
3 = sum(x) in rewrite system is a problem

Do we want pg_dump -z to be the default?
pg_dump of groups fails
pg_dump -o -D does not work, and can not work currently, generate error?
pg_dump does not preserver NUMERIC precision, psql \d should show precision
dumping out sequences should not be counted in pg_dump display

CREATE VIEW ignores DISTINCT?
ORDER BY mixed with DISTINCT causes duplicates
CREATE TABLE t1 (a int4, b int4); CREATE VIEW v1 AS SELECT b, count(b)
	FROM t1 GROUP BY b; SELECT count FROM v1; fails

Markup sql.sgml, Stefan's intro to SQL
Markup cvs.sgml, cvs and cvsup howto
Add figures to sql.sgml and arch-dev.sgml, both from Stefan
Include Jose's date/time history in User's Guide (neat!)
Generate Admin, User, Programmer hardcopy postscript

DROP TABLE/RENAME TABLE doesn't remove extended files, *.1, *.2
Multi-segment indexes?
Vacuum of tables >2 gigs - NOTICE:  Can't truncate multi-segments relation

Make Serial its own type?
Add support for & operator
store binary-compatible type information in the system somewhere 
add ability to add comments to system tables using table/colname combination
process const=const parts of OR clause in separate pass
make oid use oidin/oidout not int4in/int4out in pg_type.h, make oid use
	unsigned int more reliably, pg_atoi()

-- 
  Bruce Momjian                        |  http://www.op.net/~candle
  [email protected]            |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* Re: [HACKERS] Update Open Items list
@ 1999-05-12 14:19  Thomas Lockhart <[email protected]>
  parent: Bruce Momjian <[email protected]>
  1 sibling, 0 replies; 12548+ messages in thread

From: Thomas Lockhart @ 1999-05-12 14:19 UTC (permalink / raw)
  To: Bruce Momjian <[email protected]>; +Cc: pgsql-hackers

> create table "AA" ( x int4 , y serial ); insert into "AA" (x) values (1); fails

I see the "AA" problem, and was just working in that code. Will look
at it.

> SELECT 1; SELECT 2 fails when sent not via psql, semicolon problem

I'm almost certain that this is from changes introduced by Stefan's
EXCEPT patches. There are some rules in gram.y which handle multiple
statements, and he commented them out to get rid of shift/reduce
conflicts he introduced :(

                         - Thomas

-- 
Thomas Lockhart				[email protected]
South Pasadena, California



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* Re: [HACKERS] Update Open Items list
@ 1999-05-12 15:29  Jan Wieck <[email protected]>
  parent: Bruce Momjian <[email protected]>
  1 sibling, 1 reply; 12548+ messages in thread

From: Jan Wieck @ 1999-05-12 15:29 UTC (permalink / raw)
  To: Bruce Momjian <[email protected]>; +Cc: pgsql-hackers

> CREATE VIEW ignores DISTINCT?

    Will  not  be  fixed in v6.5. I'll add an elog(ERROR, ...) to
    reject those view definitions during CREATE VIEW.

> CREATE TABLE t1 (a int4, b int4); CREATE VIEW v1 AS SELECT b, count(b)
>    FROM t1 GROUP BY b; SELECT count FROM v1; fails

    Fixed.

    SELECT b FROM v1; still fails with

    ERROR:  union_planner: query is marked hasAggs, but I don't see any

    Must adjust hasAggs as final step in rewriter.


Jan

--

#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me.                                  #
#======================================== [email protected] (Jan Wieck) #





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* Re: [HACKERS] Update Open Items list
@ 1999-05-12 17:04  Jan Wieck <[email protected]>
  parent: Jan Wieck <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Jan Wieck @ 1999-05-12 17:04 UTC (permalink / raw)
  To: [email protected]; +Cc: [email protected]; pgsql-hackers

> 
> > CREATE VIEW ignores DISTINCT?
> 
>     Will  not  be  fixed in v6.5. I'll add an elog(ERROR, ...) to
>     reject those view definitions during CREATE VIEW.

	Done.

> 
> > CREATE TABLE t1 (a int4, b int4); CREATE VIEW v1 AS SELECT b, count(b)
> >    FROM t1 GROUP BY b; SELECT count FROM v1; fails
> 
>     Fixed.
> 
>     SELECT b FROM v1; still fails with
> 
>     ERROR:  union_planner: query is marked hasAggs, but I don't see any
> 
>     Must adjust hasAggs as final step in rewriter.

	Done.


Jan

-- 

#======================================================================#
# It's easier to get forgiveness for being wrong than for being right. #
# Let's break this rule - forgive me.                                  #
#======================================== [email protected] (Jan Wieck) #




^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 544dd0d6e3d..13284f1d708 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index d89be1b9533..4fd10a5e7b3 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1164,9 +1164,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3694,6 +3691,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 4b37d92a49e..8d1e8a20998 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=
Content-Type: text/x-diff
Content-Disposition: attachment;
 filename=v42-0007-Teach-snapshot-builder-to-skip-transactions-running-.patch



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v44 09/10] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index de7182a85a9..cfd33f73f48 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1438,6 +1443,12 @@ index_create_copy(Relation heapRelation, bool concurrently,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1528,7 +1539,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3001,6 +3012,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3011,7 +3023,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3062,6 +3075,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3819,7 +3833,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 2c3058ba10d..018e9f7b013 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1153,9 +1153,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3582,6 +3579,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 83edab38760..c9e22e95515 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1233,6 +1233,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 56a064ef444..a03238304a0 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -148,7 +149,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--gwom7bl7ogtszo4k
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v44-0010-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH v43 6/7] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 68a42de0889..1c8226c6d67 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1181,7 +1181,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index 98d38dc5229..1d28202de34 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -715,6 +715,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -760,6 +763,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1276,7 +1280,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1455,6 +1460,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1545,7 +1556,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3018,6 +3029,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3028,7 +3040,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3079,6 +3092,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3836,7 +3850,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 36950aea780..065316ee866 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3616,6 +3613,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 836eedb8ed5..1c4a887da13 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1231,6 +1231,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 144e241ebd3..6c7f0fee115 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -71,6 +71,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -152,7 +153,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--nzintiedl6o4kcyp
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="v43-0007-Teach-snapshot-builder-to-skip-transactions-runn.patch"



^ permalink  raw  reply  [nested|flat] 12548+ messages in thread

* [PATCH] Fix a few problems in index build progress reporting.
@ 2026-03-16 12:53  Antonin Houska <[email protected]>
  0 siblings, 0 replies; 12548+ messages in thread

From: Antonin Houska @ 2026-03-16 12:53 UTC (permalink / raw)

First, index_build() should not update the progress when being driven by
REPACK, because the progress reporting infractructure cannot handle status of
two commands at the same time. So far, REPACK with the CONCURRENTLY option
neglected this problem altogether, but even the existing REPACK wasn't
consistent enough: even if the 'progress' variable in repack_index() was
false, it didn't pass the value to index_build().

Second, REPACK (CONCURRENTLY) should not set PROGRESS_REPACK_PHASE to
PROGRESS_REPACK_PHASE_FINAL_CLEANUP in rebuild_relation() because it calls
finish_heap_swap() anyway (via rebuild_relation_finish_concurrent()), which
does the same thing.
---
 src/backend/bootstrap/bootstrap.c |  2 +-
 src/backend/catalog/heap.c        |  3 ++-
 src/backend/catalog/index.c       | 22 ++++++++++++++++++----
 src/backend/catalog/toasting.c    |  3 ++-
 src/backend/commands/cluster.c    |  7 ++++---
 src/backend/commands/indexcmds.c  |  1 +
 src/include/catalog/index.h       |  4 +++-
 7 files changed, 31 insertions(+), 11 deletions(-)

diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c
index 17118f2fe76..cb06c52c1d4 100644
--- a/src/backend/bootstrap/bootstrap.c
+++ b/src/backend/bootstrap/bootstrap.c
@@ -1180,7 +1180,7 @@ build_indices(void)
 		heap = table_open(ILHead->il_heap, NoLock);
 		ind = index_open(ILHead->il_ind, NoLock);
 
-		index_build(heap, ind, ILHead->il_info, false, false);
+		index_build(heap, ind, ILHead->il_info, false, false, false);
 
 		index_close(ind, NoLock);
 		table_close(heap, NoLock);
diff --git a/src/backend/catalog/heap.c b/src/backend/catalog/heap.c
index 5748aa9a1a9..ae6b7cda3dd 100644
--- a/src/backend/catalog/heap.c
+++ b/src/backend/catalog/heap.c
@@ -3570,7 +3570,8 @@ RelationTruncateIndexes(Relation heapRelation)
 
 		/* Initialize the index and rebuild */
 		/* Note: we do not need to re-establish pkey setting */
-		index_build(heapRelation, currentIndex, indexInfo, true, false);
+		index_build(heapRelation, currentIndex, indexInfo, true, false,
+					true);
 
 		/* We're done with this index */
 		index_close(currentIndex, NoLock);
diff --git a/src/backend/catalog/index.c b/src/backend/catalog/index.c
index b1e05d56a1e..89aad2f7b77 100644
--- a/src/backend/catalog/index.c
+++ b/src/backend/catalog/index.c
@@ -714,6 +714,9 @@ UpdateIndexRelation(Oid indexoid,
  *			already exists.
  *		INDEX_CREATE_PARTITIONED:
  *			create a partitioned index (table must be partitioned)
+ *		INDEX_CREATE_REPORT_PROGRESS:
+ *			update the backend's progress information during index build.
+
  * constr_flags: flags passed to index_constraint_create
  *		(only if INDEX_CREATE_ADD_CONSTRAINT is set)
  * allow_system_table_mods: allow table to be a system catalog
@@ -759,6 +762,7 @@ index_create(Relation heapRelation,
 	bool		invalid = (flags & INDEX_CREATE_INVALID) != 0;
 	bool		concurrent = (flags & INDEX_CREATE_CONCURRENT) != 0;
 	bool		partitioned = (flags & INDEX_CREATE_PARTITIONED) != 0;
+	bool		progress = (flags & INDEX_CREATE_REPORT_PROGRESS) != 0;
 	char		relkind;
 	TransactionId relfrozenxid;
 	MultiXactId relminmxid;
@@ -1275,7 +1279,8 @@ index_create(Relation heapRelation,
 	}
 	else
 	{
-		index_build(heapRelation, indexRelation, indexInfo, false, true);
+		index_build(heapRelation, indexRelation, indexInfo, false, true,
+					progress);
 	}
 
 	/*
@@ -1454,6 +1459,12 @@ index_create_copy(Relation heapRelation, Oid oldIndexId, Oid tablespaceOid,
 		stattargets[i].isnull = isnull;
 	}
 
+	/*
+	 * Note: The current callers do not need INDEX_CREATE_REPORT_PROGRESS. If
+	 * 'concurrently' is true, there is no build at all. Otherwise the index
+	 * build is a sub-command of REPACK. The current infrastructure does not
+	 * allow two commands to report their progress at the same time.
+	 */
 	if (concurrently)
 		flags = INDEX_CREATE_SKIP_BUILD | INDEX_CREATE_CONCURRENT;
 
@@ -1544,7 +1555,7 @@ index_concurrently_build(Oid heapRelationId,
 	indexInfo->ii_BrokenHotChain = false;
 
 	/* Now build the index */
-	index_build(heapRel, indexRelation, indexInfo, false, true);
+	index_build(heapRel, indexRelation, indexInfo, false, true, true);
 
 	/* Roll back any GUC changes executed by index functions */
 	AtEOXact_GUC(false, save_nestlevel);
@@ -3017,6 +3028,7 @@ index_update_stats(Relation rel,
  *
  * isreindex indicates we are recreating a previously-existing index.
  * parallel indicates if parallelism may be useful.
+ * progress indicates if the backend should update its progress info.
  *
  * Note: before Postgres 8.2, the passed-in heap and index Relations
  * were automatically closed by this routine.  This is no longer the case.
@@ -3027,7 +3039,8 @@ index_build(Relation heapRelation,
 			Relation indexRelation,
 			IndexInfo *indexInfo,
 			bool isreindex,
-			bool parallel)
+			bool parallel,
+			bool progress)
 {
 	IndexBuildResult *stats;
 	Oid			save_userid;
@@ -3078,6 +3091,7 @@ index_build(Relation heapRelation,
 	RestrictSearchPath();
 
 	/* Set up initial progress report status */
+	if (progress)
 	{
 		const int	progress_index[] = {
 			PROGRESS_CREATEIDX_PHASE,
@@ -3835,7 +3849,7 @@ reindex_index(const ReindexStmt *stmt, Oid indexId,
 
 	/* Initialize the index and rebuild */
 	/* Note: we do not need to re-establish pkey setting */
-	index_build(heapRelation, iRel, indexInfo, true, true);
+	index_build(heapRelation, iRel, indexInfo, true, true, progress);
 
 	/* Re-allow use of target index */
 	ResetReindexProcessing();
diff --git a/src/backend/catalog/toasting.c b/src/backend/catalog/toasting.c
index 078a1cf5127..73c41360ae9 100644
--- a/src/backend/catalog/toasting.c
+++ b/src/backend/catalog/toasting.c
@@ -331,7 +331,8 @@ create_toast_table(Relation rel, Oid toastOid, Oid toastIndexOid,
 				 BTREE_AM_OID,
 				 rel->rd_rel->reltablespace,
 				 collationIds, opclassIds, NULL, coloptions, NULL, (Datum) 0,
-				 INDEX_CREATE_IS_PRIMARY, 0, true, true, NULL);
+				 INDEX_CREATE_IS_PRIMARY | INDEX_CREATE_REPORT_PROGRESS, 0,
+				 true, true, NULL);
 
 	table_close(toast_rel, NoLock);
 
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index fe419ef808e..9aaa8e95389 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -1162,9 +1162,6 @@ rebuild_relation(Relation OldHeap, Relation index, bool verbose,
 
 		rebuild_relation_finish_concurrent(NewHeap, OldHeap, ident_idx,
 										   frozenXid, cutoffMulti);
-
-		pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
-									 PROGRESS_REPACK_PHASE_FINAL_CLEANUP);
 	}
 	else
 	{
@@ -3505,6 +3502,10 @@ rebuild_relation_finish_concurrent(Relation NewHeap, Relation OldHeap,
 	relpersistence = OldHeap->rd_rel->relpersistence;
 	is_system_catalog = IsSystemRelation(OldHeap);
 
+	/*
+	 * finish_heap_swap() sets the phase too, but here we need some swapping
+	 * in advance.
+	 */
 	pgstat_progress_update_param(PROGRESS_REPACK_PHASE,
 								 PROGRESS_REPACK_PHASE_SWAP_REL_FILES);
 
diff --git a/src/backend/commands/indexcmds.c b/src/backend/commands/indexcmds.c
index 34209bd1393..ad5c1238e09 100644
--- a/src/backend/commands/indexcmds.c
+++ b/src/backend/commands/indexcmds.c
@@ -1230,6 +1230,7 @@ DefineIndex(ParseState *pstate,
 		flags |= INDEX_CREATE_PARTITIONED;
 	if (stmt->primary)
 		flags |= INDEX_CREATE_IS_PRIMARY;
+	flags |= INDEX_CREATE_REPORT_PROGRESS;
 
 	/*
 	 * If the table is partitioned, and recursion was declined but partitions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h
index 3426087b445..3778e9b7f07 100644
--- a/src/include/catalog/index.h
+++ b/src/include/catalog/index.h
@@ -65,6 +65,7 @@ extern void index_check_primary_key(Relation heapRel,
 #define	INDEX_CREATE_IF_NOT_EXISTS			(1 << 4)
 #define	INDEX_CREATE_PARTITIONED			(1 << 5)
 #define INDEX_CREATE_INVALID				(1 << 6)
+#define INDEX_CREATE_REPORT_PROGRESS		(1 << 7)
 
 extern Oid	index_create(Relation heapRelation,
 						 const char *indexRelationName,
@@ -146,7 +147,8 @@ extern void index_build(Relation heapRelation,
 						Relation indexRelation,
 						IndexInfo *indexInfo,
 						bool isreindex,
-						bool parallel);
+						bool parallel,
+						bool progress);
 
 extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
 
-- 
2.47.3


--=-=-=--





^ permalink  raw  reply  [nested|flat] 12548+ messages in thread