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help / color / mirror / Atom feedFrom: Justin Pryzby <[email protected]>
Subject: [PATCH v8 2/3] Implement CLUSTER of partitioned table..
Date: Sun, 7 Jun 2020 16:58:42 -0500
This requires either specification of a partitioned index on which to cluster,
or that an partitioned index was previously set clustered.
---
doc/src/sgml/ref/cluster.sgml | 6 +
src/backend/commands/cluster.c | 230 +++++++++++++++++++-------
src/bin/psql/tab-complete.c | 1 +
src/include/nodes/parsenodes.h | 5 +-
src/test/regress/expected/cluster.out | 70 +++++++-
src/test/regress/sql/cluster.sql | 27 ++-
6 files changed, 268 insertions(+), 71 deletions(-)
diff --git a/doc/src/sgml/ref/cluster.sgml b/doc/src/sgml/ref/cluster.sgml
index 4da60d8d56..2df8aaabc4 100644
--- a/doc/src/sgml/ref/cluster.sgml
+++ b/doc/src/sgml/ref/cluster.sgml
@@ -172,6 +172,12 @@ CLUSTER [VERBOSE]
are periodically reclustered.
</para>
+ <para>
+ Clustering a partitioned table clusters each of its partitions using the
+ index partition of the given partitioned index or (if not specified) the
+ partitioned index marked as clustered.
+ </para>
+
</refsect1>
<refsect1>
diff --git a/src/backend/commands/cluster.c b/src/backend/commands/cluster.c
index 0d647e912c..d2e3ebc8af 100644
--- a/src/backend/commands/cluster.c
+++ b/src/backend/commands/cluster.c
@@ -32,7 +32,9 @@
#include "catalog/index.h"
#include "catalog/namespace.h"
#include "catalog/objectaccess.h"
+#include "catalog/partition.h"
#include "catalog/pg_am.h"
+#include "catalog/pg_inherits.h"
#include "catalog/toasting.h"
#include "commands/cluster.h"
#include "commands/progress.h"
@@ -74,7 +76,11 @@ static void copy_table_data(Oid OIDNewHeap, Oid OIDOldHeap, Oid OIDOldIndex,
bool *pSwapToastByContent,
TransactionId *pFreezeXid,
MultiXactId *pCutoffMulti);
+static void set_indisclustered(Oid indexOid, bool isclustered, Relation pg_index);
static List *get_tables_to_cluster(MemoryContext cluster_context);
+static List *get_tables_to_cluster_partitioned(MemoryContext cluster_context,
+ Oid indexOid);
+static void cluster_multiple_rels(List *rvs, bool isTopLevel, int options);
/*---------------------------------------------------------------------------
@@ -116,7 +122,7 @@ cluster(ClusterStmt *stmt, bool isTopLevel)
AccessExclusiveLock,
0,
RangeVarCallbackOwnsTable, NULL);
- rel = table_open(tableOid, NoLock);
+ rel = table_open(tableOid, ShareUpdateExclusiveLock);
/*
* Reject clustering a remote temp table ... their local buffer
@@ -127,14 +133,6 @@ cluster(ClusterStmt *stmt, bool isTopLevel)
(errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
errmsg("cannot cluster temporary tables of other sessions")));
- /*
- * Reject clustering a partitioned table.
- */
- if (rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
- ereport(ERROR,
- (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("cannot cluster a partitioned table")));
-
if (stmt->indexname == NULL)
{
ListCell *index;
@@ -172,8 +170,32 @@ cluster(ClusterStmt *stmt, bool isTopLevel)
/* close relation, keep lock till commit */
table_close(rel, NoLock);
- /* Do the job. */
- cluster_rel(tableOid, indexOid, stmt->options, isTopLevel);
+ if (rel->rd_rel->relkind != RELKIND_PARTITIONED_TABLE)
+ {
+ /* Do the job. */
+ cluster_rel(tableOid, indexOid, stmt->options, isTopLevel);
+ }
+ else
+ {
+ List *rvs;
+ MemoryContext cluster_context;
+
+ /* Refuse to hold strong locks in a user transaction */
+ PreventInTransactionBlock(isTopLevel, "CLUSTER");
+
+ cluster_context = AllocSetContextCreate(PortalContext,
+ "Cluster",
+ ALLOCSET_DEFAULT_SIZES);
+
+ rvs = get_tables_to_cluster_partitioned(cluster_context, indexOid);
+ cluster_multiple_rels(rvs, isTopLevel, stmt->options);
+
+ /* Start a new transaction for the cleanup work. */
+ StartTransactionCommand();
+
+ /* Clean up working storage */
+ MemoryContextDelete(cluster_context);
+ }
}
else
{
@@ -183,7 +205,6 @@ cluster(ClusterStmt *stmt, bool isTopLevel)
*/
MemoryContext cluster_context;
List *rvs;
- ListCell *rv;
/*
* We cannot run this form of CLUSTER inside a user transaction block;
@@ -207,26 +228,7 @@ cluster(ClusterStmt *stmt, bool isTopLevel)
*/
rvs = get_tables_to_cluster(cluster_context);
- /* Commit to get out of starting transaction */
- PopActiveSnapshot();
- CommitTransactionCommand();
-
- /* Ok, now that we've got them all, cluster them one by one */
- foreach(rv, rvs)
- {
- RelToCluster *rvtc = (RelToCluster *) lfirst(rv);
-
- /* Start a new transaction for each relation. */
- StartTransactionCommand();
- /* functions in indexes may want a snapshot set */
- PushActiveSnapshot(GetTransactionSnapshot());
- /* Do the job. */
- cluster_rel(rvtc->tableOid, rvtc->indexOid,
- stmt->options | CLUOPT_RECHECK,
- isTopLevel);
- PopActiveSnapshot();
- CommitTransactionCommand();
- }
+ cluster_multiple_rels(rvs, isTopLevel, stmt->options | CLUOPT_RECHECK_ISCLUSTERED);
/* Start a new transaction for the cleanup work. */
StartTransactionCommand();
@@ -332,9 +334,10 @@ cluster_rel(Oid tableOid, Oid indexOid, int options, bool isTopLevel)
}
/*
- * Check that the index is still the one with indisclustered set.
+ * Check that the index is still the one with indisclustered set, if needed.
*/
- if (!get_index_isclustered(indexOid))
+ if ((options & CLUOPT_RECHECK_ISCLUSTERED) != 0 &&
+ !get_index_isclustered(indexOid))
{
relation_close(OldHeap, AccessExclusiveLock);
pgstat_progress_end_command();
@@ -378,8 +381,13 @@ cluster_rel(Oid tableOid, Oid indexOid, int options, bool isTopLevel)
/* Check heap and index are valid to cluster on */
if (OidIsValid(indexOid))
+ {
check_index_is_clusterable(OldHeap, indexOid, recheck, AccessExclusiveLock);
+ /* Mark the index as clustered */
+ mark_index_clustered(OldHeap, indexOid, true);
+ }
+
/*
* Quietly ignore the request if this is a materialized view which has not
* been populated from its query. No harm is done because there is no data
@@ -395,6 +403,14 @@ cluster_rel(Oid tableOid, Oid indexOid, int options, bool isTopLevel)
return;
}
+ /* For a partitioned rel, we're done. */
+ if (!RELKIND_HAS_STORAGE(get_rel_relkind(tableOid)))
+ {
+ relation_close(OldHeap, AccessExclusiveLock);
+ pgstat_progress_end_command();
+ return;
+ }
+
/*
* All predicate locks on the tuples or pages are about to be made
* invalid, because we move tuples around. Promote them to relation
@@ -463,6 +479,9 @@ check_index_is_clusterable(Relation OldHeap, Oid indexOid, bool recheck, LOCKMOD
* the worst consequence of following broken HOT chains would be that we
* might put recently-dead tuples out-of-order in the new table, and there
* is little harm in that.)
+ *
+ * This also refuses to cluster on an "incomplete" partitioned index
+ * created with "ON ONLY".
*/
if (!OldIndex->rd_index->indisvalid)
ereport(ERROR,
@@ -474,6 +493,32 @@ check_index_is_clusterable(Relation OldHeap, Oid indexOid, bool recheck, LOCKMOD
index_close(OldIndex, NoLock);
}
+/*
+ * Helper for mark_index_clustered
+ * Mark a single index as clustered or not.
+ * pg_index is passed by caller to avoid repeatedly re-opening it.
+ */
+static void
+set_indisclustered(Oid indexOid, bool isclustered, Relation pg_index)
+{
+ HeapTuple indexTuple;
+ Form_pg_index indexForm;
+
+ indexTuple = SearchSysCacheCopy1(INDEXRELID,
+ ObjectIdGetDatum(indexOid));
+ if (!HeapTupleIsValid(indexTuple))
+ elog(ERROR, "cache lookup failed for index %u", indexOid);
+ indexForm = (Form_pg_index) GETSTRUCT(indexTuple);
+
+ /* this was checked earlier, but let's be real sure */
+ if (isclustered && !indexForm->indisvalid)
+ elog(ERROR, "cannot cluster on invalid index %u", indexOid);
+
+ indexForm->indisclustered = isclustered;
+ CatalogTupleUpdate(pg_index, &indexTuple->t_self, indexTuple);
+ heap_freetuple(indexTuple);
+}
+
/*
* mark_index_clustered: mark the specified index as the one clustered on
*
@@ -482,17 +527,9 @@ check_index_is_clusterable(Relation OldHeap, Oid indexOid, bool recheck, LOCKMOD
void
mark_index_clustered(Relation rel, Oid indexOid, bool is_internal)
{
- HeapTuple indexTuple;
- Form_pg_index indexForm;
Relation pg_index;
ListCell *index;
- /* Disallow applying to a partitioned table */
- if (rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
- ereport(ERROR,
- (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
- errmsg("cannot mark index clustered in partitioned table")));
-
/*
* If the index is already marked clustered, no need to do anything.
*/
@@ -511,34 +548,32 @@ mark_index_clustered(Relation rel, Oid indexOid, bool is_internal)
{
Oid thisIndexOid = lfirst_oid(index);
- indexTuple = SearchSysCacheCopy1(INDEXRELID,
- ObjectIdGetDatum(thisIndexOid));
- if (!HeapTupleIsValid(indexTuple))
- elog(ERROR, "cache lookup failed for index %u", thisIndexOid);
- indexForm = (Form_pg_index) GETSTRUCT(indexTuple);
-
/*
* Unset the bit if set. We know it's wrong because we checked this
* earlier.
*/
- if (indexForm->indisclustered)
+ if (thisIndexOid != indexOid)
{
- indexForm->indisclustered = false;
- CatalogTupleUpdate(pg_index, &indexTuple->t_self, indexTuple);
+ Oid parentind = thisIndexOid;
+ set_indisclustered(thisIndexOid, false, pg_index);
+
+ /*
+ * When setting a given index as clustered, also remove
+ * indisclustered from all parents of other partitioned indexes
+ */
+ while (get_rel_relispartition(parentind))
+ {
+ parentind = get_partition_parent(parentind);
+ set_indisclustered(parentind, false, pg_index);
+ }
}
- else if (thisIndexOid == indexOid)
+ else
{
- /* this was checked earlier, but let's be real sure */
- if (!indexForm->indisvalid)
- elog(ERROR, "cannot cluster on invalid index %u", indexOid);
- indexForm->indisclustered = true;
- CatalogTupleUpdate(pg_index, &indexTuple->t_self, indexTuple);
+ set_indisclustered(thisIndexOid, true, pg_index);
}
InvokeObjectPostAlterHookArg(IndexRelationId, thisIndexOid, 0,
InvalidOid, is_internal);
-
- heap_freetuple(indexTuple);
}
table_close(pg_index, RowExclusiveLock);
@@ -565,10 +600,6 @@ rebuild_relation(Relation OldHeap, Oid indexOid, bool isTopLevel, bool verbose)
TransactionId frozenXid;
MultiXactId cutoffMulti;
- /* Mark the correct index as clustered */
- if (OidIsValid(indexOid))
- mark_index_clustered(OldHeap, indexOid, true);
-
/* Remember info about rel before closing OldHeap */
relpersistence = OldHeap->rd_rel->relpersistence;
is_system_catalog = IsSystemRelation(OldHeap);
@@ -1563,3 +1594,76 @@ get_tables_to_cluster(MemoryContext cluster_context)
return rvs;
}
+
+/*
+ * Return a List of tables and associated index, where each index is a
+ * partition of the given index
+ */
+static List *
+get_tables_to_cluster_partitioned(MemoryContext cluster_context, Oid indexOid)
+{
+ List *inhoids;
+ ListCell *lc;
+ List *rvs = NIL;
+ MemoryContext old_context;
+
+ inhoids = find_all_inheritors(indexOid, NoLock, NULL);
+
+ foreach(lc, inhoids)
+ {
+ Oid indexrelid = lfirst_oid(lc);
+ Oid relid = IndexGetRelation(indexrelid, false);
+ RelToCluster *rvtc;
+
+ /*
+ * Partitioned rels are also processed by cluster_rel, to
+ * call check_index_is_clusterable() and mark_index_clustered().
+ */
+
+ /*
+ * We have to build the list in a different memory context so it will
+ * survive the cross-transaction processing
+ */
+ old_context = MemoryContextSwitchTo(cluster_context);
+
+ rvtc = (RelToCluster *) palloc(sizeof(RelToCluster));
+ rvtc->tableOid = relid;
+ rvtc->indexOid = indexrelid;
+ rvs = lappend(rvs, rvtc);
+
+ MemoryContextSwitchTo(old_context);
+ }
+
+ return rvs;
+}
+
+/* Cluster each relation in a separate transaction */
+static void
+cluster_multiple_rels(List *rvs, bool isTopLevel, int options)
+{
+ ListCell *lc;
+
+ /* Commit to get out of starting transaction */
+ PopActiveSnapshot();
+ CommitTransactionCommand();
+
+ /* Ok, now that we've got them all, cluster them one by one */
+ foreach(lc, rvs)
+ {
+ RelToCluster *rvtc = (RelToCluster *) lfirst(lc);
+
+ /* Start a new transaction for each relation. */
+ StartTransactionCommand();
+
+ /* functions in indexes may want a snapshot set */
+ PushActiveSnapshot(GetTransactionSnapshot());
+
+ /* Do the job. */
+ cluster_rel(rvtc->tableOid, rvtc->indexOid,
+ options | CLUOPT_RECHECK,
+ isTopLevel);
+
+ PopActiveSnapshot();
+ CommitTransactionCommand();
+ }
+}
diff --git a/src/bin/psql/tab-complete.c b/src/bin/psql/tab-complete.c
index 9c6f5ecb6a..ad0cd2ec92 100644
--- a/src/bin/psql/tab-complete.c
+++ b/src/bin/psql/tab-complete.c
@@ -587,6 +587,7 @@ static const SchemaQuery Query_for_list_of_clusterables = {
.catname = "pg_catalog.pg_class c",
.selcondition =
"c.relkind IN (" CppAsString2(RELKIND_RELATION) ", "
+ CppAsString2(RELKIND_PARTITIONED_TABLE) ", "
CppAsString2(RELKIND_MATVIEW) ")",
.viscondition = "pg_catalog.pg_table_is_visible(c.oid)",
.namespace = "c.relnamespace",
diff --git a/src/include/nodes/parsenodes.h b/src/include/nodes/parsenodes.h
index 60c2f45466..d428a94454 100644
--- a/src/include/nodes/parsenodes.h
+++ b/src/include/nodes/parsenodes.h
@@ -3202,8 +3202,9 @@ typedef struct AlterSystemStmt
*/
typedef enum ClusterOption
{
- CLUOPT_RECHECK = 1 << 0, /* recheck relation state */
- CLUOPT_VERBOSE = 1 << 1 /* print progress info */
+ CLUOPT_VERBOSE = 1 << 0, /* print progress info */
+ CLUOPT_RECHECK = 1 << 1, /* recheck relation state */
+ CLUOPT_RECHECK_ISCLUSTERED = 1 << 2, /* recheck relation state for indisclustered */
} ClusterOption;
typedef struct ClusterStmt
diff --git a/src/test/regress/expected/cluster.out b/src/test/regress/expected/cluster.out
index bdae8fe00c..60d2a36255 100644
--- a/src/test/regress/expected/cluster.out
+++ b/src/test/regress/expected/cluster.out
@@ -439,13 +439,75 @@ select * from clstr_temp;
drop table clstr_temp;
RESET SESSION AUTHORIZATION;
--- Check that partitioned tables cannot be clustered
+-- Check that partitioned tables can be clustered
CREATE TABLE clstrpart (a int) PARTITION BY RANGE (a);
+CREATE TABLE clstrpart1 PARTITION OF clstrpart FOR VALUES FROM (1)TO(10) PARTITION BY RANGE (a);
+CREATE TABLE clstrpart11 PARTITION OF clstrpart1 FOR VALUES FROM (1)TO(10);
+CREATE TABLE clstrpart12 PARTITION OF clstrpart1 FOR VALUES FROM (10)TO(20) PARTITION BY RANGE(a);
+CREATE TABLE clstrpart2 PARTITION OF clstrpart FOR VALUES FROM (20)TO(30);
+CREATE TABLE clstrpart3 PARTITION OF clstrpart DEFAULT PARTITION BY RANGE(a);
+CREATE TABLE clstrpart33 PARTITION OF clstrpart3 DEFAULT;
+ALTER TABLE clstrpart SET WITHOUT CLUSTER;
+CREATE INDEX clstrpart_only_idx ON ONLY clstrpart (a);
+CLUSTER clstrpart USING clstrpart_only_idx; -- fails
+ERROR: cannot cluster on invalid index "clstrpart_only_idx"
+DROP INDEX clstrpart_only_idx;
CREATE INDEX clstrpart_idx ON clstrpart (a);
-ALTER TABLE clstrpart CLUSTER ON clstrpart_idx;
-ERROR: cannot mark index clustered in partitioned table
+-- Check that clustering sets new relfilenodes:
+CREATE TEMP TABLE old_cluster_info AS SELECT relname, relfilenode, relkind FROM pg_partition_tree('clstrpart'::regclass) AS tree JOIN pg_class c ON c.oid=tree.relid ;
CLUSTER clstrpart USING clstrpart_idx;
-ERROR: cannot cluster a partitioned table
+CREATE TEMP TABLE new_cluster_info AS SELECT relname, relfilenode, relkind FROM pg_partition_tree('clstrpart'::regclass) AS tree JOIN pg_class c ON c.oid=tree.relid ;
+SELECT relname, old.relkind, old.relfilenode = new.relfilenode FROM old_cluster_info AS old JOIN new_cluster_info AS new USING (relname) ORDER BY 1;
+ relname | relkind | ?column?
+-------------+---------+----------
+ clstrpart | p | t
+ clstrpart1 | p | t
+ clstrpart11 | r | f
+ clstrpart12 | p | t
+ clstrpart2 | r | f
+ clstrpart3 | p | t
+ clstrpart33 | r | f
+(7 rows)
+
+-- Check that clustering sets new indisclustered:
+SELECT i.indexrelid::regclass::text, relkind, indisclustered FROM pg_partition_tree('clstrpart_idx'::regclass) AS tree JOIN pg_index i ON i.indexrelid=tree.relid JOIN pg_class c ON c.oid=indexrelid ORDER BY 1;
+ indexrelid | relkind | indisclustered
+-------------------+---------+----------------
+ clstrpart11_a_idx | i | t
+ clstrpart12_a_idx | I | t
+ clstrpart1_a_idx | I | t
+ clstrpart2_a_idx | i | t
+ clstrpart33_a_idx | i | t
+ clstrpart3_a_idx | I | t
+ clstrpart_idx | I | t
+(7 rows)
+
+CLUSTER clstrpart1 USING clstrpart1_a_idx; -- partition which is itself partitioned
+CLUSTER clstrpart12 USING clstrpart12_a_idx; -- partition which is itself partitioned, no childs
+CLUSTER clstrpart2 USING clstrpart2_a_idx; -- leaf
+\d clstrpart
+ Partitioned table "public.clstrpart"
+ Column | Type | Collation | Nullable | Default
+--------+---------+-----------+----------+---------
+ a | integer | | |
+Partition key: RANGE (a)
+Indexes:
+ "clstrpart_idx" btree (a) CLUSTER
+Number of partitions: 3 (Use \d+ to list them.)
+
+-- Check that the parent index is marked not clustered after clustering a partition on a different index:
+CREATE INDEX clstrpart1_idx_2 ON clstrpart1(a);
+CLUSTER clstrpart1 USING clstrpart1_idx_2;
+\d clstrpart
+ Partitioned table "public.clstrpart"
+ Column | Type | Collation | Nullable | Default
+--------+---------+-----------+----------+---------
+ a | integer | | |
+Partition key: RANGE (a)
+Indexes:
+ "clstrpart_idx" btree (a)
+Number of partitions: 3 (Use \d+ to list them.)
+
DROP TABLE clstrpart;
-- Test CLUSTER with external tuplesorting
create table clstr_4 as select * from tenk1;
diff --git a/src/test/regress/sql/cluster.sql b/src/test/regress/sql/cluster.sql
index 188183647c..93e9c8c6ee 100644
--- a/src/test/regress/sql/cluster.sql
+++ b/src/test/regress/sql/cluster.sql
@@ -196,11 +196,34 @@ drop table clstr_temp;
RESET SESSION AUTHORIZATION;
--- Check that partitioned tables cannot be clustered
+-- Check that partitioned tables can be clustered
CREATE TABLE clstrpart (a int) PARTITION BY RANGE (a);
+CREATE TABLE clstrpart1 PARTITION OF clstrpart FOR VALUES FROM (1)TO(10) PARTITION BY RANGE (a);
+CREATE TABLE clstrpart11 PARTITION OF clstrpart1 FOR VALUES FROM (1)TO(10);
+CREATE TABLE clstrpart12 PARTITION OF clstrpart1 FOR VALUES FROM (10)TO(20) PARTITION BY RANGE(a);
+CREATE TABLE clstrpart2 PARTITION OF clstrpart FOR VALUES FROM (20)TO(30);
+CREATE TABLE clstrpart3 PARTITION OF clstrpart DEFAULT PARTITION BY RANGE(a);
+CREATE TABLE clstrpart33 PARTITION OF clstrpart3 DEFAULT;
+ALTER TABLE clstrpart SET WITHOUT CLUSTER;
+CREATE INDEX clstrpart_only_idx ON ONLY clstrpart (a);
+CLUSTER clstrpart USING clstrpart_only_idx; -- fails
+DROP INDEX clstrpart_only_idx;
CREATE INDEX clstrpart_idx ON clstrpart (a);
-ALTER TABLE clstrpart CLUSTER ON clstrpart_idx;
+-- Check that clustering sets new relfilenodes:
+CREATE TEMP TABLE old_cluster_info AS SELECT relname, relfilenode, relkind FROM pg_partition_tree('clstrpart'::regclass) AS tree JOIN pg_class c ON c.oid=tree.relid ;
CLUSTER clstrpart USING clstrpart_idx;
+CREATE TEMP TABLE new_cluster_info AS SELECT relname, relfilenode, relkind FROM pg_partition_tree('clstrpart'::regclass) AS tree JOIN pg_class c ON c.oid=tree.relid ;
+SELECT relname, old.relkind, old.relfilenode = new.relfilenode FROM old_cluster_info AS old JOIN new_cluster_info AS new USING (relname) ORDER BY 1;
+-- Check that clustering sets new indisclustered:
+SELECT i.indexrelid::regclass::text, relkind, indisclustered FROM pg_partition_tree('clstrpart_idx'::regclass) AS tree JOIN pg_index i ON i.indexrelid=tree.relid JOIN pg_class c ON c.oid=indexrelid ORDER BY 1;
+CLUSTER clstrpart1 USING clstrpart1_a_idx; -- partition which is itself partitioned
+CLUSTER clstrpart12 USING clstrpart12_a_idx; -- partition which is itself partitioned, no childs
+CLUSTER clstrpart2 USING clstrpart2_a_idx; -- leaf
+\d clstrpart
+-- Check that the parent index is marked not clustered after clustering a partition on a different index:
+CREATE INDEX clstrpart1_idx_2 ON clstrpart1(a);
+CLUSTER clstrpart1 USING clstrpart1_idx_2;
+\d clstrpart
DROP TABLE clstrpart;
-- Test CLUSTER with external tuplesorting
--
2.17.0
--FCuugMFkClbJLl1L
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
filename="v8-0003-WIP-implement-DROP-INDEX-CONCURRENTLY-on-partitio.patch"
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