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[PATCH 01/11] Don't use EV_CLEAR for kqueue events.
381+ messages / 3 participants
[nested] [flat]

* [PATCH 01/11] Don't use EV_CLEAR for kqueue events.
@ 2020-02-24 13:53  Thomas Munro <thomas.munro@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Thomas Munro @ 2020-02-24 13:53 UTC (permalink / raw)

For the semantics to match the epoll implementation, we need a
socket to continue to appear readable/writable if you wait
multiple times without doing I/O in between (in Linux
terminology, level-triggered rather than edge-triggered).
Similar to commit 3b790d256f8 for Windows.

Author: Thomas Munro
Discussion: https://postgr.es/m/CA%2BhUKGJAC4Oqao%3DqforhNey20J8CiG2R%3DoBPqvfR0vOJrFysGw%40mail.gmail.com
---
 src/backend/storage/ipc/latch.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/storage/ipc/latch.c b/src/backend/storage/ipc/latch.c
index 046ca5c6c7..3b6acfb251 100644
--- a/src/backend/storage/ipc/latch.c
+++ b/src/backend/storage/ipc/latch.c
@@ -991,7 +991,7 @@ WaitEventAdjustKqueueAdd(struct kevent *k_ev, int filter, int action,
 {
 	k_ev->ident = event->fd;
 	k_ev->filter = filter;
-	k_ev->flags = action | EV_CLEAR;
+	k_ev->flags = action;
 	k_ev->fflags = 0;
 	k_ev->data = 0;
 	AccessWaitEvent(k_ev) = event;
@@ -1003,7 +1003,7 @@ WaitEventAdjustKqueueAddPostmaster(struct kevent *k_ev, WaitEvent *event)
 	/* For now postmaster death can only be added, not removed. */
 	k_ev->ident = PostmasterPid;
 	k_ev->filter = EVFILT_PROC;
-	k_ev->flags = EV_ADD | EV_CLEAR;
+	k_ev->flags = EV_ADD;
 	k_ev->fflags = NOTE_EXIT;
 	k_ev->data = 0;
 	AccessWaitEvent(k_ev) = event;
-- 
2.18.2


----Next_Part(Fri_Mar_13_16_21_13_2020_620)--
Content-Type: Text/X-Patch; charset=us-ascii
Content-Transfer-Encoding: 7bit
Content-Disposition: inline;
 filename="0002-Use-a-long-lived-WaitEventSet-for-WaitLatch.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 2/3] one more stress test for repack concurrently
@ 2025-12-13 17:46  Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
  0 siblings, 0 replies; 381+ messages in thread

From: Mikhail Nikalayeu @ 2025-12-13 17:46 UTC (permalink / raw)

---
 contrib/amcheck/meson.build       |   1 +
 contrib/amcheck/t/008_repack_2.pl | 111 ++++++++++++++++++++++++++++++
 2 files changed, 112 insertions(+)
 create mode 100644 contrib/amcheck/t/008_repack_2.pl

diff --git a/contrib/amcheck/meson.build b/contrib/amcheck/meson.build
index cb4bc32e98a..6799df214f9 100644
--- a/contrib/amcheck/meson.build
+++ b/contrib/amcheck/meson.build
@@ -51,6 +51,7 @@ tests += {
       't/005_pitr.pl',
       't/006_verify_gin.pl',
       't/007_repack_1.pl',
+      't/008_repack_2.pl',
     ],
   },
 }
diff --git a/contrib/amcheck/t/008_repack_2.pl b/contrib/amcheck/t/008_repack_2.pl
new file mode 100644
index 00000000000..a287ee2bb71
--- /dev/null
+++ b/contrib/amcheck/t/008_repack_2.pl
@@ -0,0 +1,111 @@
+# 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';
+}
+
+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 $duration = 6 * $stressval;
+my $no_hot = int(rand(2));
+
+$node->start;
+$node->safe_psql('postgres', q(CREATE TABLE tbl(id SERIAL PRIMARY KEY, val int)));
+if ($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));
+
+my $sum = $node->safe_psql('postgres', q(
+	SELECT SUM(val) AS sum FROM tbl
+));
+
+$node->safe_psql('postgres', q(CREATE UNLOGGED SEQUENCE last_j START 1 INCREMENT 1;));
+
+
+$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
+			SELECT pg_advisory_lock(43);
+				BEGIN;
+				INSERT INTO tbl(val) VALUES (nextval('last_j')) RETURNING val \\gset p_
+				COMMIT;
+			SELECT pg_advisory_unlock(43);
+			\\sleep 1 ms
+
+			BEGIN
+			--TRANSACTION ISOLATION LEVEL REPEATABLE READ
+			;
+			SELECT 1;
+			\\sleep 1 ms
+			SELECT COUNT(*) AS count FROM tbl WHERE val <= :p_j \\gset p_
+			\\if :p_count != :p_j
+				COMMIT;
+				SELECT (:p_count) / 0;
+			\\endif
+
+			COMMIT;
+		\\endif
+	)
+});
+
+$node->stop;
+done_testing();
-- 
2.47.3


--tbdehtstrqwksfdh
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0003-Distinguish-properly-when-database-specific-transact.patch"



^ permalink  raw  reply  [nested|flat] 381+ messages in thread

* [PATCH 1/2] REPACK: do not require the user to have REPLICATION
@ 2026-04-20 09:38  Álvaro Herrera <alvherre@kurilemu.de>
  0 siblings, 0 replies; 381+ messages in thread

From: Álvaro Herrera @ 2026-04-20 09:38 UTC (permalink / raw)

Although REPACK (CONCURRENTLY) uses replication slots, there is no
concern that the slot will leak data of other users, because the
MAINTAIN privilege on the table is required anyway; requiring
REPLICATION is user-unfriendly without providing any actual protection.

A related aspect is that the REPLICATION attribute is not needed to
prevent REPACK from stealing slots from logical replication, since
commit e76d8c749c31 made REPACK use a separate pool of replication
slots.

Because there are now successful concurrent repack runs in the
regression tests, we're forced to run test_plan_advice under
wal_level=replica.

Author: Antonin Houska <ah@cybertec.at>
Reported-by: Justin Pryzby <pryzby@telsasoft.com>
Reviewed-by: Chao Li <lic@highgo.com>
Discussion: https://postgr.es/m/aeJHPNmL4vVy3oPw@pryzbyj2023
---
 src/backend/commands/repack_worker.c          |  1 -
 .../test_plan_advice/t/001_replan_regress.pl  |  1 +
 src/test/regress/expected/cluster.out         | 20 +++++++++++++++++--
 src/test/regress/sql/cluster.sql              | 11 ++++++++--
 4 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/backend/commands/repack_worker.c b/src/backend/commands/repack_worker.c
index b17edd771e2..e4a4860805b 100644
--- a/src/backend/commands/repack_worker.c
+++ b/src/backend/commands/repack_worker.c
@@ -214,7 +214,6 @@ repack_setup_logical_decoding(Oid relid)
 	/*
 	 * Make sure we can use logical decoding.
 	 */
-	CheckSlotPermissions();
 	CheckLogicalDecodingRequirements(true);
 
 	/*
diff --git a/src/test/modules/test_plan_advice/t/001_replan_regress.pl b/src/test/modules/test_plan_advice/t/001_replan_regress.pl
index 38ffa4d11ae..452b179a665 100644
--- a/src/test/modules/test_plan_advice/t/001_replan_regress.pl
+++ b/src/test/modules/test_plan_advice/t/001_replan_regress.pl
@@ -18,6 +18,7 @@ $node->init();
 # Set up our desired configuration.
 $node->append_conf('postgresql.conf', <<EOM);
 shared_preload_libraries='test_plan_advice'
+wal_level=replica
 pg_plan_advice.always_explain_supplied_advice=false
 pg_plan_advice.feedback_warnings=true
 EOM
diff --git a/src/test/regress/expected/cluster.out b/src/test/regress/expected/cluster.out
index 6127b215a86..e17bc91fae1 100644
--- a/src/test/regress/expected/cluster.out
+++ b/src/test/regress/expected/cluster.out
@@ -543,15 +543,17 @@ ERROR:  REPACK (CONCURRENTLY) is not supported for partitioned tables
 HINT:  Consider running the command on individual partitions.
 DROP TABLE clstrpart;
 -- Ownership of partitions is checked
-CREATE TABLE ptnowner(i int unique) PARTITION BY LIST (i);
+CREATE TABLE ptnowner(i int unique not null) PARTITION BY LIST (i);
 CREATE INDEX ptnowner_i_idx ON ptnowner(i);
 CREATE TABLE ptnowner1 PARTITION OF ptnowner FOR VALUES IN (1);
-CREATE ROLE regress_ptnowner;
+CREATE ROLE regress_ptnowner LOGIN;
 CREATE TABLE ptnowner2 PARTITION OF ptnowner FOR VALUES IN (2);
 ALTER TABLE ptnowner1 OWNER TO regress_ptnowner;
 SET SESSION AUTHORIZATION regress_ptnowner;
 CLUSTER ptnowner USING ptnowner_i_idx;
 ERROR:  permission denied for table ptnowner
+ALTER TABLE ptnowner1 REPLICA IDENTITY USING INDEX ptnowner1_i_key;
+REPACK (CONCURRENTLY) ptnowner1;
 RESET SESSION AUTHORIZATION;
 ALTER TABLE ptnowner OWNER TO regress_ptnowner;
 CREATE TEMP TABLE ptnowner_oldnodes AS
@@ -560,6 +562,11 @@ CREATE TEMP TABLE ptnowner_oldnodes AS
 SET SESSION AUTHORIZATION regress_ptnowner;
 CLUSTER ptnowner USING ptnowner_i_idx;
 WARNING:  permission denied to execute CLUSTER on "ptnowner2", skipping it
+-- still can't repack without a replica identity
+ALTER TABLE ptnowner1 REPLICA IDENTITY DEFAULT;
+REPACK (CONCURRENTLY) ptnowner1;
+ERROR:  cannot process relation "ptnowner1"
+HINT:  Relation "ptnowner1" has no identity index.
 RESET SESSION AUTHORIZATION;
 SELECT a.relname, a.relfilenode=b.relfilenode FROM pg_class a
   JOIN ptnowner_oldnodes b USING (oid) ORDER BY a.relname COLLATE "C";
@@ -570,6 +577,15 @@ SELECT a.relname, a.relfilenode=b.relfilenode FROM pg_class a
  ptnowner2 | t
 (3 rows)
 
+SELECT a.relname, a.relfilenode=b.relfilenode FROM pg_class a
+  JOIN ptnowner_oldnodes b USING (oid) ORDER BY a.relname COLLATE "C";
+  relname  | ?column? 
+-----------+----------
+ ptnowner  | t
+ ptnowner1 | f
+ ptnowner2 | t
+(3 rows)
+
 DROP TABLE ptnowner;
 DROP ROLE regress_ptnowner;
 -- Test CLUSTER with external tuplesorting
diff --git a/src/test/regress/sql/cluster.sql b/src/test/regress/sql/cluster.sql
index d14063a9683..1f471a8821a 100644
--- a/src/test/regress/sql/cluster.sql
+++ b/src/test/regress/sql/cluster.sql
@@ -254,14 +254,16 @@ REPACK (CONCURRENTLY) clstrpart;
 DROP TABLE clstrpart;
 
 -- Ownership of partitions is checked
-CREATE TABLE ptnowner(i int unique) PARTITION BY LIST (i);
+CREATE TABLE ptnowner(i int unique not null) PARTITION BY LIST (i);
 CREATE INDEX ptnowner_i_idx ON ptnowner(i);
 CREATE TABLE ptnowner1 PARTITION OF ptnowner FOR VALUES IN (1);
-CREATE ROLE regress_ptnowner;
+CREATE ROLE regress_ptnowner LOGIN;
 CREATE TABLE ptnowner2 PARTITION OF ptnowner FOR VALUES IN (2);
 ALTER TABLE ptnowner1 OWNER TO regress_ptnowner;
 SET SESSION AUTHORIZATION regress_ptnowner;
 CLUSTER ptnowner USING ptnowner_i_idx;
+ALTER TABLE ptnowner1 REPLICA IDENTITY USING INDEX ptnowner1_i_key;
+REPACK (CONCURRENTLY) ptnowner1;
 RESET SESSION AUTHORIZATION;
 ALTER TABLE ptnowner OWNER TO regress_ptnowner;
 CREATE TEMP TABLE ptnowner_oldnodes AS
@@ -269,7 +271,12 @@ CREATE TEMP TABLE ptnowner_oldnodes AS
   JOIN pg_class AS c ON c.oid=tree.relid;
 SET SESSION AUTHORIZATION regress_ptnowner;
 CLUSTER ptnowner USING ptnowner_i_idx;
+-- still can't repack without a replica identity
+ALTER TABLE ptnowner1 REPLICA IDENTITY DEFAULT;
+REPACK (CONCURRENTLY) ptnowner1;
 RESET SESSION AUTHORIZATION;
+SELECT a.relname, a.relfilenode=b.relfilenode FROM pg_class a
+  JOIN ptnowner_oldnodes b USING (oid) ORDER BY a.relname COLLATE "C";
 SELECT a.relname, a.relfilenode=b.relfilenode FROM pg_class a
   JOIN ptnowner_oldnodes b USING (oid) ORDER BY a.relname COLLATE "C";
 DROP TABLE ptnowner;
-- 
2.47.3


--m6zy3l65ushq557m
Content-Type: text/x-diff; charset=utf-8
Content-Disposition: attachment;
	filename="0002-REPACK-do-not-require-LOGIN-privileges.patch"



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2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2025-12-13 17:46 [PATCH 2/3] one more stress test for repack concurrently Mikhail Nikalayeu <mihailnikalayeu@gmail.com>
2026-04-20 09:38 [PATCH 1/2] REPACK: do not require the user to have REPLICATION Álvaro Herrera <alvherre@kurilemu.de>

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