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[PATCH 8/8] reverse arguments .. isn't the other order a bug?
173+ messages / 3 participants
[nested] [flat]

* [PATCH 8/8] reverse arguments .. isn't the other order a bug?
@ 2020-03-12 21:33 Alvaro Herrera <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Alvaro Herrera @ 2020-03-12 21:33 UTC (permalink / raw)

---
 src/backend/executor/nodeIncrementalSort.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/backend/executor/nodeIncrementalSort.c b/src/backend/executor/nodeIncrementalSort.c
index 909d2df53f..bb88fca207 100644
--- a/src/backend/executor/nodeIncrementalSort.c
+++ b/src/backend/executor/nodeIncrementalSort.c
@@ -653,7 +653,7 @@ ExecIncrementalSort(PlanState *pstate)
 										  &node->incsort_info.fullsortGroupInfo,
 										  fullsort_state);
 
-				SO_printf("Setting execution_status to INCSORT_READFULLSORT (final tuple) \n");
+				SO_printf("Setting execution_status to INCSORT_READFULLSORT (final tuple)\n");
 				node->execution_status = INCSORT_READFULLSORT;
 				break;
 			}
@@ -713,7 +713,8 @@ ExecIncrementalSort(PlanState *pstate)
 						 * configuring sorting bound.
 						 */
 						SO2_printf("Changing bound_Done from %ld to %ld\n",
-								   Min(node->bound, node->bound_Done + nTuples), node->bound_Done);
+								   node->bound_Done,
+								   Min(node->bound, node->bound_Done + nTuples));
 						node->bound_Done = Min(node->bound, node->bound_Done + nTuples);
 					}
 
@@ -721,7 +722,8 @@ ExecIncrementalSort(PlanState *pstate)
 					 * Once we find changed prefix keys we can complete the
 					 * sort and begin reading out the sorted tuples.
 					 */
-					SO1_printf("Sorting fullsort tuplesort with %ld tuples\n", nTuples);
+					SO1_printf("Sorting fullsort tuplesort with %ld tuples\n",
+							   nTuples);
 					tuplesort_performsort(fullsort_state);
 
 					if (pstate->instrument != NULL)
@@ -882,7 +884,8 @@ ExecIncrementalSort(PlanState *pstate)
 			 * in configuring sorting bound.
 			 */
 			SO2_printf("Changing bound_Done from %ld to %ld\n",
-					   Min(node->bound, node->bound_Done + nTuples), node->bound_Done);
+					   node->bound_Done,
+					   Min(node->bound, node->bound_Done + nTuples));
 			node->bound_Done = Min(node->bound, node->bound_Done + nTuples);
 		}
 	}
-- 
2.20.1


--jI8keyz6grp/JLjh--





^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH v7 1/4] Zero initialize instr_time uses causing compiler warnings
@ 2023-01-16 18:04 Andres Freund <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Andres Freund @ 2023-01-16 18:04 UTC (permalink / raw)

These are all not necessary from a correctness POV. However, in a subsequent
patch instr_time will be simplified to an int64, at which point gcc would
otherwise start to warn about the changed places.

Author:
Reviewed-by:
Discussion: https://postgr.es/m/[email protected]
Backpatch:
---
 src/backend/access/transam/xlog.c   | 4 ++++
 src/backend/storage/buffer/bufmgr.c | 4 ++++
 src/backend/storage/file/buffile.c  | 4 ++++
 src/bin/psql/common.c               | 6 ++++++
 4 files changed, 18 insertions(+)

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index 8f47fb75700..7d65b1d4159 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -2191,6 +2191,8 @@ XLogWrite(XLogwrtRqst WriteRqst, TimeLineID tli, bool flexible)
 				/* Measure I/O timing to write WAL data */
 				if (track_wal_io_timing)
 					INSTR_TIME_SET_CURRENT(start);
+				else
+					INSTR_TIME_SET_ZERO(start);
 
 				pgstat_report_wait_start(WAIT_EVENT_WAL_WRITE);
 				written = pg_pwrite(openLogFile, from, nleft, startoffset);
@@ -8150,6 +8152,8 @@ issue_xlog_fsync(int fd, XLogSegNo segno, TimeLineID tli)
 	/* Measure I/O timing to sync the WAL file */
 	if (track_wal_io_timing)
 		INSTR_TIME_SET_CURRENT(start);
+	else
+		INSTR_TIME_SET_ZERO(start);
 
 	pgstat_report_wait_start(WAIT_EVENT_WAL_SYNC);
 	switch (sync_method)
diff --git a/src/backend/storage/buffer/bufmgr.c b/src/backend/storage/buffer/bufmgr.c
index 8075828e8a6..800a4248c95 100644
--- a/src/backend/storage/buffer/bufmgr.c
+++ b/src/backend/storage/buffer/bufmgr.c
@@ -1017,6 +1017,8 @@ ReadBuffer_common(SMgrRelation smgr, char relpersistence, ForkNumber forkNum,
 
 			if (track_io_timing)
 				INSTR_TIME_SET_CURRENT(io_start);
+			else
+				INSTR_TIME_SET_ZERO(io_start);
 
 			smgrread(smgr, forkNum, blockNum, (char *) bufBlock);
 
@@ -2902,6 +2904,8 @@ FlushBuffer(BufferDesc *buf, SMgrRelation reln)
 
 	if (track_io_timing)
 		INSTR_TIME_SET_CURRENT(io_start);
+	else
+		INSTR_TIME_SET_ZERO(io_start);
 
 	/*
 	 * bufToWrite is either the shared buffer or a copy, as appropriate.
diff --git a/src/backend/storage/file/buffile.c b/src/backend/storage/file/buffile.c
index c5464b6aa62..0a51624df3b 100644
--- a/src/backend/storage/file/buffile.c
+++ b/src/backend/storage/file/buffile.c
@@ -446,6 +446,8 @@ BufFileLoadBuffer(BufFile *file)
 
 	if (track_io_timing)
 		INSTR_TIME_SET_CURRENT(io_start);
+	else
+		INSTR_TIME_SET_ZERO(io_start);
 
 	/*
 	 * Read whatever we can get, up to a full bufferload.
@@ -525,6 +527,8 @@ BufFileDumpBuffer(BufFile *file)
 
 		if (track_io_timing)
 			INSTR_TIME_SET_CURRENT(io_start);
+		else
+			INSTR_TIME_SET_ZERO(io_start);
 
 		bytestowrite = FileWrite(thisfile,
 								 file->buffer.data + wpos,
diff --git a/src/bin/psql/common.c b/src/bin/psql/common.c
index 00627830c47..f907f5d4e8d 100644
--- a/src/bin/psql/common.c
+++ b/src/bin/psql/common.c
@@ -1276,6 +1276,8 @@ DescribeQuery(const char *query, double *elapsed_msec)
 
 	if (timing)
 		INSTR_TIME_SET_CURRENT(before);
+	else
+		INSTR_TIME_SET_ZERO(before);
 
 	/*
 	 * To parse the query but not execute it, we prepare it, using the unnamed
@@ -1406,6 +1408,8 @@ ExecQueryAndProcessResults(const char *query,
 
 	if (timing)
 		INSTR_TIME_SET_CURRENT(before);
+	else
+		INSTR_TIME_SET_ZERO(before);
 
 	if (pset.bind_flag)
 		success = PQsendQueryParams(pset.db, query, pset.bind_nparams, NULL, (const char * const *) pset.bind_params, NULL, NULL, 0);
@@ -1702,6 +1706,8 @@ ExecQueryUsingCursor(const char *query, double *elapsed_msec)
 
 	if (timing)
 		INSTR_TIME_SET_CURRENT(before);
+	else
+		INSTR_TIME_SET_ZERO(before);
 
 	/* if we're not in a transaction, start one */
 	if (PQtransactionStatus(pset.db) == PQTRANS_IDLE)
-- 
2.38.0


--ftp5i6iirmkwy7na
Content-Type: text/x-diff; charset=us-ascii
Content-Disposition: attachment;
	filename="v7-0002-Use-int64-to-represent-instr_time-on-all-platform.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread

* [PATCH 1/3] stress test for repack concurrently
@ 2025-12-13 17:13 Mikhail Nikalayeu <[email protected]>
  0 siblings, 0 replies; 173+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:13 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/007_repack_1.pl | 121 ++++++++++++++++++++++++++++++
 doc/src/sgml/regress.sgml         |  16 ++++
 3 files changed, 138 insertions(+)
 create mode 100644 contrib/amcheck/t/007_repack_1.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index d5137ef691d..cb4bc32e98a 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -50,6 +50,7 @@ tests += {
       't/004_verify_nbtree_unique.pl',
       't/005_pitr.pl',
       't/006_verify_gin.pl',
+      't/007_repack_1.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/007_repack_1.pl b/contrib/amcheck/t/007_repack_1.pl
new file mode 100644
index 00000000000..17f3caa3a38
--- /dev/null
+++ b/contrib/amcheck/t/007_repack_1.pl
@@ -0,0 +1,121 @@
+# Copyright (c) 2021-2026, PostgreSQL Global Development Group
+
+# Test REPACK CONCURRENTLY with concurrent modifications
+use strict;
+use warnings FATAL => 'all';
+
+use PostgreSQL::Test::Cluster;
+use PostgreSQL::Test::Utils;
+
+use Test::More;
+
+# PG_TEST_EXTRA carries a numerical stress value; 0 disables the test,
+# 1 means the test takes about 6 seconds, and the increase should be
+# roughly linear.
+my $matched = ($ENV{PG_TEST_EXTRA} // '') =~ /\bstress_concurrently(?:=(?<stressval>[0-9]*))?\b/;
+my $stressval = $+{stressval} // 1;
+if (!$matched or $stressval == 0)
+{
+	plan skip_all => 'skipping disabled REPACK CONCURRENTLY stress test';
+}
+
+note "stressval is $stressval";
+
+my $node;
+
+# Test set-up
+$node = PostgreSQL::Test::Cluster->new('CIC_test');
+$node->init;
+$node->append_conf('postgresql.conf',
+	'lock_timeout = ' . (1000 * $PostgreSQL::Test::Utils::timeout_default));
+$node->append_conf(
+	'postgresql.conf', qq(
+wal_level = logical
+));
+
+my $nrows = 10_000 * $stressval;
+my $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id int PRIMARY KEY, val int)));
+
+if ($no_hot)
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(val);));
+}
+else
+{
+	$node->safe_psql('postgres', q(CREATE INDEX test_idx ON tbl(id);));
+}
+
+
+# Load amcheck
+$node->safe_psql('postgres', q(CREATE EXTENSION amcheck));
+
+# Insert $nrows rows into tbl
+$node->safe_psql('postgres', qq(
+	INSERT INTO tbl SELECT g, g FROM generate_series(1, $nrows) g
+));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+
+$node->pgbench(
+"--no-vacuum --client=30 --jobs=4 --exit-on-abort -T $duration",
+0,
+[qr{actually processed}],
+[qr{^$}],
+'concurrent operations with REINDEX/CREATE INDEX CONCURRENTLY',
+{
+	'concurrent_ops' => qq(
+		SELECT pg_try_advisory_lock(42)::integer AS gotlock \\gset
+		\\if :gotlock
+			REPACK (CONCURRENTLY) tbl USING INDEX tbl_pkey;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl USING INDEX test_idx;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			REPACK (CONCURRENTLY) tbl;
+			SELECT bt_index_parent_check('tbl_pkey', heapallindexed => true);
+			SELECT bt_index_parent_check('test_idx', heapallindexed => true);
+			\\sleep 10 ms
+
+			SELECT pg_advisory_unlock(42);
+		\\else
+			\\set num_a random(1, $nrows)
+			\\set num_b random(1, $nrows)
+			\\set diff random(1, 10000)
+			BEGIN;
+			UPDATE tbl SET val = val + :diff WHERE id = :num_a;
+			\\sleep 1 ms
+			UPDATE tbl SET val = val - :diff WHERE id = :num_b;
+			\\sleep 1 ms
+			COMMIT;
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COALESCE(SUM(val), 0) AS sum FROM tbl \\gset p_
+			\\if :p_sum != $sum
+				COMMIT;
+				SELECT (:p_sum) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+
+done_testing();
diff --git a/doc/src/sgml/regress.sgml b/doc/src/sgml/regress.sgml
index c74941bfbf2..c5b1b79a60c 100644
--- a/doc/src/sgml/regress.sgml
+++ b/doc/src/sgml/regress.sgml
@@ -386,6 +386,22 @@ make check-world PG_TEST_EXTRA='kerberos ldap ssl load_balance libpq_encryption'
      </listitem>
     </varlistentry>
 
+    <varlistentry>
+     <term><literal>stress_concurrently</literal><optional>=VALUE</optional></term>
+     <listitem>
+      <para>
+       Run some additional, moderately expensive tests for commands with a
+       <literal>CONCURRENTLY</literal> option.  Optionally, an integer can be
+       given after an equal sign, which affects how long each such test
+       runs for.
+       Each test is calibrated so that, when given a value of 10,
+       it runs for approximately 60 seconds.
+       If no value is given, 1 is assumed.
+       Explicitly giving a value of 0 causes the test to be skipped.
+      </para>
+     </listitem>
+    </varlistentry>
+
     <varlistentry>
      <term><literal>wal_consistency_checking</literal></term>
      <listitem>
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-one-more-stress-test-for-repack-concurrently.patch"



^ permalink  raw  reply  [nested|flat] 173+ messages in thread